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<p class="MsoNormal"><a name="OLE_LINK6">Yes I have two customers over there – one in VA and the other WV. I did not do traceroutes but I was observing strange activity. Both the PE and the CPE would respond to ICMP but VPN tunnel to corporate office down
and my monitoring was down. I did notice the outages on downdetector over several states so I figured I would give it some time to resolve itself. My two offices just returned about 10 minutes ago. Thanks for the info about the routing loop. The Comcast
rep I spoke with seemed oblivious to the situation. We’ll see what happens.<o:p></o:p></a></p>
<p class="MsoNormal"><span style="mso-bookmark:OLE_LINK6"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:OLE_LINK6">Best Regards,</span><o:p></o:p></p>
<p class="MsoNormal">Josh<o:p></o:p></p>
<p class="MsoNormal"><o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> Outages <outages-bounces@outages.org> <b>On Behalf Of
</b>Geoff AB3LS via Outages<br>
<b>Sent:</b> Wednesday, January 16, 2019 3:23 AM<br>
<b>To:</b> outages@outages.org<br>
<b>Subject:</b> [outages] Comcast Ashburn Backbone Issues<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">I am seeing what looks like a possible routing loop or some other routing issue going on with Comcast’s backbone in Ashburn, VA. I am a customer in Western Pennsylvania and I am unable to reach certain destinations
such as <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.duckduckgo.com&d=DwMFaQ&c=-7HNwxqfpkdcRXCW8HB54Q&r=svX1Si7sopSBMitBL3bFwQ&m=60fytUEAoLJ26Q0HrYLYU_9b_JqnNKUvkwND0xLoGn8&s=kcN5pYRApDBJDuJ72gzNTQ0Ghx10PC2QCgA7q5PE2IA&e=">
www.duckduckgo.com</a>or <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.google.org&d=DwMFaQ&c=-7HNwxqfpkdcRXCW8HB54Q&r=svX1Si7sopSBMitBL3bFwQ&m=60fytUEAoLJ26Q0HrYLYU_9b_JqnNKUvkwND0xLoGn8&s=Z9zYeX8Ekk-811XR7KLsKzb6CcBXyIJfRZxuTxCY5rQ&e=">
www.google.org</a>. This has been going on for about an hour afaik. Traceroutes are playing ping pong between cr2.<a href="ashburn.va.ibone.comcast.net">ashburn.va.ibone.comcast.net</a>and either cs2 or cs4.<a href="ashburn.va.ibone.comcast.net">ashburn.va.ibone.comcast.net</a><br>
<br>
An example MTR to <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.duckduckgo.com&d=DwMFaQ&c=-7HNwxqfpkdcRXCW8HB54Q&r=svX1Si7sopSBMitBL3bFwQ&m=60fytUEAoLJ26Q0HrYLYU_9b_JqnNKUvkwND0xLoGn8&s=kcN5pYRApDBJDuJ72gzNTQ0Ghx10PC2QCgA7q5PE2IA&e=">
www.duckduckgo.com</a>.<br>
<br>
HOST: gravitron Loss% Snt Last Avg Best Wrst StDev<br>
1.|-- IRIDIUM 0.0% 100 0.7 0.9 0.6 6.8 0.7<br>
2.|-- 96.120.62.193 0.0% 100 8.0 9.4 7.4 15.3 1.9<br>
3.|-- 96.108.98.65 0.0% 100 8.9 9.7 7.3 19.4 2.2<br>
4.|-- 162.151.65.5 0.0% 100 9.8 10.3 5.6 17.3 1.9<br>
5.|-- be-7016-cr02.ashburn.va.i 0.0% 100 18.5 17.3 15.1 23.9 1.8<br>
6.|-- be-1402-cs04.ashburn.va.i 98.0% 100 15.2 15.3 15.2 15.5 0.2<br>
7.|-- be-1402-cr02.ashburn.va.i 97.0% 100 22.1 18.7 16.4 22.1 3.0<br>
8.|-- ??? 100.0 100 0.0 0.0 0.0 0.0 0.0<br>
9.|-- be-1402-cr02.ashburn.va.i 94.0% 100 18.2 17.7 16.2 21.4 1.9<br>
10.|-- be-1402-cs04.ashburn.va.i 99.0% 100 18.3 18.3 18.3 18.3 0.0<br>
11.|-- be-1402-cr02.ashburn.va.i 94.0% 100 18.7 20.2 16.1 30.4 5.1<br>
12.|-- ??? 100.0 100 0.0 0.0 0.0 0.0 0.0<br>
13.|-- be-1402-cr02.ashburn.va.i 93.9% 98 18.1 18.6 16.8 24.2 2.8<br>
14.|-- ??? 100.0 96 0.0 0.0 0.0 0.0 0.0<br>
15.|-- be-1402-cr02.ashburn.va.i 96.9% 96 16.7 17.6 16.7 18.7 1.0<br>
16.|-- ??? 100.0 83 0.0 0.0 0.0 0.0 0.0<br>
17.|-- be-1402-cr02.ashburn.va.i 95.2% 83 16.9 18.5 16.9 20.5 1.9<br>
18.|-- ??? 100.0 65 0.0 0.0 0.0 0.0 0.0<br>
19.|-- be-1402-cr02.ashburn.va.i 96.9% 65 17.5 17.0 16.6 17.5 0.6<br>
20.|-- ??? 100.0 54 0.0 0.0 0.0 0.0 0.0<br>
<br>
I have no way of knowing if this is isolated to the mid-Atlantic region or if it’s a widespread issue. Interestingly enough, Downdetector is showing a large spike in down reports across a wide range of services all at the same time.<br>
<br>
Is anyone else experiencing this?<o:p></o:p></p>
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<p class="MsoNormal"><br>
--<br>
Geoff<br>
AB3LS<o:p></o:p></p>
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